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PALMARY - GU20X40NC

Features

• PALMARY's high precision cylindrical grinders are unmatched in structural rigidity, stability, grinding accuracy and operational convenience. Having maximum operational flexibility allows for various grinding operations.
• The spindle runs on precision bearings, assuring maximum spindle stability. It guarantees outstanding accuracy for external and internal diameter grinding and end face grinding.
• The grinding wheel spindle is precision machined from high quality alloy steel, it is then normalized, tempered, carburized, sub-zero treated and lastly precision ground and mirror-effect treated.
• Special hydrostatic bearings ideal for precision grinding work, allows for high speed with no friction between metals, no heat generation, deformation-free to maintain extra high accuracy for continual use.
• One grinder with various grinding applications such as straight plunge, shoulder, traverse, end face, taper grinding and internal grinding function (included option).

Specifications: PALMARY - GU20X40NC

Related Products: GU32X60NC GU32X100NC GU32X150NC GU32X200NC GU42X60NC GU42X100NC GU42X150NC GU42X200NC MetricImperial

CAPACITY	METRIC	IMPERIAL
Distance between centres	400 mm	16"
Swing over table	200 mm	8"
Max load of centres	60 kg	132 lb
Max external grinding diameter	200 mm	8"
WHEEL HEAD
Swivel angle	±30°	±30°
Manual distance X-Axis travel	135 mm	5.31"
Auto rapid advance X-Axis travel	25 mm	0.98"
Sliding seat supplementary displacement X-Axis	95 (total 255 mm)	3.74" (total 10.03")
Min setting unit	0.001 mm	0.0001"
One turn of handwheel	2 mm	0.080"
– per graduation	0.005 mm	0.0002"
NC feed range	0 - 99 mm	0 - 3.89"
GRINDING WHEEL
O.D. x width x I.D.	ø355 x 38 x ø127 mm	ø14 x 1.5 x ø5"
Grinding wheel speed (belt-type)	2090 rpm / 2500 rpm	2090 rpm / 2500 rpm
WORK SPINDLE HEAD
Swivel angle	120° (+90° , -30°)	120° (+90°, -30°)
Centre taper	MT3	MT3
Spindle speeds (variable)	10 - 350 rpm	10 - 350 rpm
Max load of spindle (tool holder included)	15 kg	33 lb
TAILSTOCK
Centre taper	MT3	MT3
Stroke	20 mm	0.78"
TABLE
Swivel angle	-3°, +12°	-3°, +12°
Z-Axis travel	460 mm	18"
Traverse speed	50 - 4000 mm/min	1.96 - 157.48"/min
Auto reciprocate min stroke	8 mm	0.31"
Feed of one turn of handwheel (2-step)	20 mm (2mm)	0.787" (0.078")
MOTORS
Grinding wheel spindle	2.2kW (4P)	3hp
Workhead spindle	0.37kW (4P) (Inverter)	1/2hp (Inverter)
Hydraulic pump	0.75kW (4P)	1hp
Wheel spindle lubrication pump	0.18kW (4P)	1/4hp
Coolant pump	0.18kW (2P)	1/4hp
Internal grinding spindle	0.37kW (2P)	1/2hp
TANK CAPACITY
Grinding wheel spindle lubrication tank	10 L	2.64 US gal
Hydraulic fluid tank	46 L	12.15 US gal
Coolant tank	120 L	31.70 US gal
GENERAL
Electrical rating	600V 10Amp 3Ph 60Hz	600V 10Amp 3Ph 60Hz
Electrical approval	CSA SPE-1000	CSA SPE-1000
PHSR exemption letter	valid in Ontario	valid in Ontario
Weight	2000 kg	4409 lb
The manufacturer reserves the right to modify the design, specifications and/or colour of the machine without prior notice.

Standard Accessories

• Grinding wheel and flange (1 set)
• Diamond tool holder - table mount (1pc)
• Tool kit (1 set)
• Carbide tipped work centres (2pcs)
• Coolant equipment
• Hydraulic tank with pump
• LED Work light
• Levelling bolts, nuts & pads

Included Accessories

• 2-Axis digital readout installed
• Magnetic coolant separator with paper filter 40 L/min
• Extra wheel flange and weights
• Internal grinding attachment with 20000 rpm spindle
• Diamond tool holder - tailstock mount
• Cam locked driving dogs (6pcs/set)
• 5" 3-Jaw scroll chuck
• Wheel balancing stand with arbor

Optional Accessories

• Alternate spindle rpm for internal grinding attachment
• Diamond tool holder for internal and external grinding wheel dressing; options: sideward or upward open type
• Angular truing device
• Radius truing device
• Work steady rest (2pcs/set)
• 2-Point steady rest
• 3-Point steady rest
• 6" 4-Jaw chuck
• Wheel forming device (manual, no auto compensation)
• Wheel forming device (auto compensation)